-#include "msg_mailbox.h"\r
+#include "mailbox.h"\r
#include "msg/private.h"\r
\r
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_mailbox, msg,\r
+ "Logging specific to MSG (mailbox)");\r
+\r
static xbt_dict_t \r
msg_mailboxes = NULL;\r
\r
-xbt_dict_t\r
-MSG_get_mailboxes(void)\r
-{\r
- return msg_mailboxes;\r
-}\r
-\r
void\r
MSG_mailbox_mod_init(void)\r
{\r
}\r
\r
msg_mailbox_t\r
-MSG_mailbox_new(const char *alias)\r
+MSG_mailbox_create(const char *alias)\r
{\r
msg_mailbox_t mailbox = xbt_new0(s_msg_mailbox_t,1);\r
\r
mailbox->tasks = xbt_fifo_new();\r
mailbox->cond = NULL;\r
- mailbox->alias = xbt_strdup(alias);\r
+ mailbox->alias = alias ? xbt_strdup(alias) : NULL;\r
mailbox->hostname = NULL;\r
\r
+ return mailbox;\r
+}\r
+\r
+msg_mailbox_t\r
+MSG_mailbox_new(const char *alias)\r
+{\r
+ msg_mailbox_t mailbox = MSG_mailbox_create(alias);\r
+ \r
/* add the mbox in the dictionary */\r
xbt_dict_set(msg_mailboxes, alias, mailbox, MSG_mailbox_free);\r
\r
}\r
\r
void\r
-MSG_mailbox_destroy(msg_mailbox_t* mailbox)\r
+MSG_mailbox_free(void* mailbox)\r
{\r
- xbt_dict_remove(msg_mailboxes,(*mailbox)->alias);\r
+ msg_mailbox_t _mailbox = (msg_mailbox_t)mailbox;\r
\r
- if(NULL != ((*mailbox)->hostname))\r
- free((*mailbox)->hostname);\r
+ if(NULL != (_mailbox->hostname))\r
+ free(_mailbox->hostname);\r
\r
+ free(_mailbox->alias);\r
\r
- free((*mailbox)->alias);\r
- \r
- free(*mailbox);\r
- \r
- *mailbox = NULL; \r
+ free(_mailbox);\r
}\r
\r
void\r
return (m_task_t)xbt_fifo_get_item_content(item);\r
}\r
\r
+\r
m_task_t\r
MSG_mailbox_get_first_host_task(msg_mailbox_t mailbox, m_host_t host)\r
{\r
- m_task_t task = NULL;\r
- xbt_fifo_item_t item = NULL;\r
- \r
- xbt_fifo_foreach(mailbox->tasks, item, task, m_task_t) \r
- {\r
- if (task->simdata->source == host)\r
- break;\r
- }\r
- \r
- if(item) \r
- xbt_fifo_remove_item(mailbox->tasks, item);\r
- \r
- return task;\r
+ m_task_t task = NULL;\r
+ xbt_fifo_item_t item = NULL;\r
+\r
+ xbt_fifo_foreach(mailbox->tasks, item, task, m_task_t)\r
+ if (task->simdata->source == host) {\r
+ xbt_fifo_remove_item(mailbox->tasks, item);\r
+ return task;\r
+ }\r
+\r
+ return NULL;\r
}\r
\r
int\r
-MSG_mailbox_get_count_host_tasks(msg_mailbox_t mailbox, m_host_t host)\r
+MSG_mailbox_get_count_host_waiting_tasks(msg_mailbox_t mailbox, m_host_t host)\r
{\r
m_task_t task = NULL;\r
xbt_fifo_item_t item = NULL;\r
mailbox->hostname = xbt_strdup(hostname);\r
}\r
\r
-void\r
-MSG_mailbox_free(void* mailbox)\r
+msg_mailbox_t\r
+MSG_mailbox_get_by_alias(const char* alias)\r
{\r
- msg_mailbox_t __mailbox = (msg_mailbox_t)mailbox;\r
\r
- if(NULL != (__mailbox->hostname))\r
- free(__mailbox->hostname);\r
-\r
- free(__mailbox->alias);\r
+ msg_mailbox_t mailbox = xbt_dict_get_or_null(msg_mailboxes,alias);\r
+ \r
+ if(!mailbox)\r
+ {\r
+ mailbox = MSG_mailbox_new(alias);\r
+ MSG_mailbox_set_hostname(mailbox,MSG_host_self()->name);\r
+ }\r
\r
- free(__mailbox);\r
+ return mailbox; \r
}\r
\r
msg_mailbox_t\r
-MSG_mailbox_get_by_alias(const char* alias)\r
+MSG_mailbox_get_by_channel(m_host_t host, m_channel_t channel)\r
{\r
- xbt_ex_t e;\r
- int found = 1;\r
- msg_mailbox_t mailbox;\r
+ xbt_assert0((host != NULL), "Invalid host");\r
+ xbt_assert1((channel >= 0)&& (channel < msg_global->max_channel), "Invalid channel %d",channel);\r
\r
- TRY \r
+ return host->simdata->mailboxes[(size_t)channel];\r
+}\r
+\r
+MSG_error_t \r
+MSG_mailbox_get_task_ext(msg_mailbox_t mailbox, m_task_t* task, m_host_t host, double timeout)\r
+{\r
+ m_process_t process = MSG_process_self();\r
+ m_task_t t = NULL;\r
+ m_host_t h = NULL;\r
+ simdata_task_t t_simdata = NULL;\r
+ simdata_host_t h_simdata = NULL;\r
+ int first_time = 1;\r
+ \r
+ smx_cond_t cond = NULL; //conditional wait if the task isn't on the channel yet\r
+ \r
+ CHECK_HOST();\r
+ \r
+ /* Sanity check */\r
+ xbt_assert0(task, "Null pointer for the task storage");\r
+ \r
+ if (*task)\r
+ CRITICAL0("MSG_task_get() was asked to write in a non empty task struct.");\r
+ \r
+ /* Get the task */\r
+ h = MSG_host_self();\r
+ h_simdata = h->simdata;\r
+ \r
+ SIMIX_mutex_lock(h->simdata->mutex);\r
+ \r
+ while (1) \r
+ {\r
+ /* if the mailbox is empty (has no task */\r
+ if(!MSG_mailbox_is_empty(mailbox))\r
+ {\r
+ if(!host) \r
+ {\r
+ /* pop the head of the mailbox */\r
+ t = MSG_mailbox_pop_head(mailbox);\r
+ break;\r
+ } \r
+ else \r
+ {\r
+ /* get the first task of the host */\r
+ if(NULL != (t = MSG_mailbox_get_first_host_task(mailbox,host)))\r
+ break;\r
+ }\r
+ }\r
+ \r
+ if(timeout > 0) \r
+ {\r
+ if (!first_time) \r
+ {\r
+ SIMIX_mutex_unlock(h->simdata->mutex);\r
+ /* set the simix condition of the mailbox to NULL */\r
+ MSG_mailbox_set_cond(mailbox, NULL);\r
+ SIMIX_cond_destroy(cond);\r
+ MSG_RETURN(MSG_TRANSFER_FAILURE);\r
+ }\r
+ }\r
+ \r
+ xbt_assert1(!MSG_mailbox_get_cond(mailbox),"A process is already blocked on the channel %s", MSG_mailbox_get_alias(mailbox));\r
+ \r
+ cond = SIMIX_cond_init();\r
+ \r
+ /* set the condition of the mailbox */\r
+ MSG_mailbox_set_cond(mailbox, cond);\r
+ \r
+ if (timeout > 0)\r
+ SIMIX_cond_wait_timeout(cond, h->simdata->mutex, timeout);\r
+ else \r
+ SIMIX_cond_wait(MSG_mailbox_get_cond(mailbox), h->simdata->mutex);\r
+ \r
+ \r
+ if (SIMIX_host_get_state(h_simdata->smx_host) == 0)\r
+ MSG_RETURN(MSG_HOST_FAILURE);\r
+ \r
+ first_time = 0;\r
+ }\r
+ \r
+ SIMIX_mutex_unlock(h->simdata->mutex);\r
+ \r
+ DEBUG1("OK, got a task (%s)", t->name);\r
+ /* clean conditional */\r
+ if (cond) \r
{\r
- mailbox = xbt_dict_get(msg_mailboxes,alias);\r
+ SIMIX_cond_destroy(cond);\r
+ \r
+ MSG_mailbox_set_cond(mailbox,NULL);\r
+ }\r
+ \r
+ t_simdata = t->simdata;\r
+ t_simdata->receiver = process;\r
+ *task = t;\r
+ \r
+ SIMIX_mutex_lock(t_simdata->mutex);\r
+ \r
+ /* Transfer */\r
+ /* create SIMIX action to the communication */\r
+ t_simdata->comm = SIMIX_action_communicate(\r
+ t_simdata->sender->simdata->m_host->simdata->smx_host,\r
+ process->simdata->m_host->simdata->smx_host,\r
+ t->name, \r
+ t_simdata->message_size,\r
+ t_simdata->rate\r
+ );\r
+ \r
+ /* if the process is suspend, create the action but stop its execution, it will be restart when the sender process resume */\r
+ if (MSG_process_is_suspended(t_simdata->sender)) \r
+ {\r
+ DEBUG1("Process sender (%s) suspended", t_simdata->sender->name);\r
+ SIMIX_action_set_priority(t_simdata->comm, 0);\r
+ }\r
+ \r
+ process->simdata->waiting_task = t;\r
+ SIMIX_register_action_to_condition(t_simdata->comm, t_simdata->cond);\r
+ \r
+ while (1) \r
+ {\r
+ SIMIX_cond_wait(t_simdata->cond, t_simdata->mutex);\r
+ \r
+ if (SIMIX_action_get_state(t_simdata->comm) != SURF_ACTION_RUNNING)\r
+ break;\r
+ }\r
+ \r
+ SIMIX_unregister_action_to_condition(t_simdata->comm, t_simdata->cond);\r
+ process->simdata->waiting_task = NULL;\r
+ \r
+ /* the task has already finished and the pointer must be null */\r
+ if (t->simdata->sender) \r
+ {\r
+ t->simdata->sender->simdata->waiting_task = NULL;\r
+ }\r
+ \r
+ /* for this process, don't need to change in get function */\r
+ t->simdata->receiver = NULL;\r
+ SIMIX_mutex_unlock(t_simdata->mutex);\r
+ \r
+ \r
+ if (SIMIX_action_get_state(t_simdata->comm) == SURF_ACTION_DONE) \r
+ {\r
+ SIMIX_action_destroy(t_simdata->comm);\r
+ t_simdata->comm = NULL;\r
+ t_simdata->using--;\r
+ MSG_RETURN(MSG_OK);\r
} \r
- CATCH(e) \r
+ else if (SIMIX_host_get_state(h_simdata->smx_host) == 0) \r
{\r
- if (e.category == not_found_error) \r
+ SIMIX_action_destroy(t_simdata->comm);\r
+ t_simdata->comm = NULL;\r
+ t_simdata->using--;\r
+ MSG_RETURN(MSG_HOST_FAILURE);\r
+ } \r
+ else \r
+ {\r
+ SIMIX_action_destroy(t_simdata->comm);\r
+ t_simdata->comm = NULL;\r
+ t_simdata->using--;\r
+ MSG_RETURN(MSG_TRANSFER_FAILURE);\r
+ }\r
+}\r
+\r
+MSG_error_t \r
+MSG_mailbox_put_with_timeout(msg_mailbox_t mailbox, m_task_t task, double timeout)\r
+{\r
+ m_process_t process = MSG_process_self();\r
+ const char* hostname;\r
+ simdata_task_t task_simdata = NULL;\r
+ m_host_t local_host = NULL;\r
+ m_host_t remote_host = NULL;\r
+ smx_cond_t cond = NULL;\r
+\r
+ CHECK_HOST();\r
+ \r
+ task_simdata = task->simdata;\r
+ task_simdata->sender = process;\r
+ task_simdata->source = MSG_process_get_host(process);\r
+ \r
+ xbt_assert0(task_simdata->using == 1,"This task is still being used somewhere else. You cannot send it now. Go fix your code!");\r
+ \r
+ task_simdata->comm = NULL;\r
+ \r
+ task_simdata->using++;\r
+ local_host = ((simdata_process_t) process->simdata)->m_host;\r
+ \r
+ /* get the host name containing the mailbox */\r
+ hostname = MSG_mailbox_get_hostname(mailbox);\r
+\r
+ remote_host = MSG_get_host_by_name(hostname);\r
+\r
+ if(NULL == remote_host)\r
+ THROW1(not_found_error,0,"Host %s not fount", hostname);\r
+\r
+\r
+ DEBUG4("Trying to send a task (%g kB) from %s to %s on the channel aliased by the alias %s",task->simdata->message_size / 1000, local_host->name,remote_host->name, MSG_mailbox_get_alias(mailbox));\r
+ \r
+ SIMIX_mutex_lock(remote_host->simdata->mutex);\r
+\r
+ /* put the task in the mailbox */\r
+ MSG_mailbox_put(mailbox,task);\r
+ \r
+ if(NULL != (cond = MSG_mailbox_get_cond(mailbox)))\r
+ {\r
+ DEBUG0("Somebody is listening. Let's wake him up!");\r
+ SIMIX_cond_signal(cond);\r
+ }\r
+\r
+ \r
+ \r
+ SIMIX_mutex_unlock(remote_host->simdata->mutex);\r
+ \r
+ SIMIX_mutex_lock(task->simdata->mutex);\r
+\r
+ process->simdata->waiting_task = task;\r
+ \r
+ if(timeout > 0) \r
+ {\r
+ xbt_ex_t e;\r
+ double time;\r
+ double time_elapsed;\r
+ time = SIMIX_get_clock();\r
+ \r
+ TRY \r
{\r
- found = 0;\r
- xbt_ex_free(e);\r
+ /*verify if the action that ends is the correct. Call the wait_timeout with the new time. If the timeout occurs, an exception is raised */\r
+ while (1) \r
+ {\r
+ time_elapsed = SIMIX_get_clock() - time;\r
+ SIMIX_cond_wait_timeout(task->simdata->cond, task->simdata->mutex,timeout - time_elapsed);\r
+ \r
+ if ((task->simdata->comm != NULL) && (SIMIX_action_get_state(task->simdata->comm) != SURF_ACTION_RUNNING))\r
+ break;\r
+ }\r
} \r
- else \r
+ CATCH(e) \r
{\r
- RETHROW;\r
+ if(e.category==timeout_error) \r
+ {\r
+ xbt_ex_free(e);\r
+ /* verify if the timeout happened and the communication didn't started yet */\r
+ if (task->simdata->comm == NULL) \r
+ {\r
+ process->simdata->waiting_task = NULL;\r
+ \r
+ /* remove the task from the mailbox */\r
+ MSG_mailbox_remove(mailbox,task);\r
+ \r
+ if (task->simdata->receiver) \r
+ {\r
+ task->simdata->receiver->simdata->waiting_task = NULL;\r
+ }\r
+ \r
+ task->simdata->sender = NULL;\r
+ \r
+ SIMIX_mutex_unlock(task->simdata->mutex);\r
+ MSG_RETURN(MSG_TRANSFER_FAILURE);\r
+ }\r
+ } \r
+ else \r
+ {\r
+ RETHROW;\r
+ }\r
+ }\r
+ } \r
+ else \r
+ {\r
+ while (1) \r
+ {\r
+ SIMIX_cond_wait(task->simdata->cond, task->simdata->mutex);\r
+ \r
+ if (SIMIX_action_get_state(task->simdata->comm) != SURF_ACTION_RUNNING)\r
+ break;\r
}\r
}\r
-\r
- if(!found)\r
+ \r
+ DEBUG1("Action terminated %s", task->name);\r
+ process->simdata->waiting_task = NULL;\r
+ \r
+ /* the task has already finished and the pointer must be null */\r
+ if (task->simdata->receiver) \r
{\r
- mailbox = MSG_mailbox_new(alias);\r
- MSG_mailbox_set_hostname(mailbox,MSG_host_self()->name);\r
+ task->simdata->receiver->simdata->waiting_task = NULL;\r
}\r
\r
- return mailbox; \r
+ task->simdata->sender = NULL;\r
+ SIMIX_mutex_unlock(task->simdata->mutex);\r
+\r
+ \r
+ if (SIMIX_action_get_state(task->simdata->comm) == SURF_ACTION_DONE)\r
+ {\r
+ MSG_RETURN(MSG_OK);\r
+ } \r
+ else if (SIMIX_host_get_state(local_host->simdata->smx_host) == 0) \r
+ {\r
+ MSG_RETURN(MSG_HOST_FAILURE);\r
+ } \r
+ else \r
+ {\r
+ MSG_RETURN(MSG_TRANSFER_FAILURE);\r
+ }\r
}\r
